Can anyone provide some guidance on how to calculate the reduction rate when the project has alternative water source (municipal recycled water) for flushing fixture. What do we need to include in the supplemental narrative?
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emily reese moody
Sustainability Director, Certifications & ComplianceJacobs
LEEDuser Expert
454 thumbs up
January 27, 2023 - 6:09 pm
Hi Lincon,
Have you looked at the credit form yet? That often helps me know exactly what it is the reviewers will look for. Here's the guidance it provides there (note that alternative sources only contribute to the calc'd savings for the Credit, but not the Prereq):
Upload alternative water system design drawings, a narrative describing the alternative source, and calculations confirming the alternative water quantity. Include climate data and storage size/use calculations. Note alternative water use for irrigation or other purposes and the corresponding prerequisite/credit submittal(s) (i.e. WE Prerequisite/Credit Outdoor Water Use). The sum total of all alternative water use across all water-consuming systems must not exceed system production.
There are also some other fields within to provide the calc numbers.
Hope that helps.